Suppressing and restoring the Dicke superradiance transition by dephasing and decay
Abstract
We show that dephasing of individual atoms destroys the superradiance transition of the Dicke model, but that adding individual decay toward the spin down state can restore this transition. To demonstrate this, we present a method to give an exact solution for the N atom problem with individual dephasing which scales polynomially with N. By comparing finite size scaling of our exact solution to a cumulant expansion, we confirm the destruction and restoration of the superradiance transition holds in the thermodynamic limit.
Citation
Kirton , P & Keeling , J 2017 , ' Suppressing and restoring the Dicke superradiance transition by dephasing and decay ' , Physical Review Letters , vol. 118 , no. 12 , 123602 . https://doi.org/10.1103/PhysRevLett.118.123602
Publication
Physical Review Letters
Status
Peer reviewed
ISSN
0031-9007Type
Journal article
Collections
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.